AD9241 Datasheet | Analog Devices

FEATURES Monolithic 14-Bit, 1.25 MSPS A/D Converter Low Power Dissipation: 60 m W Single +5 V Supply Integral Nonlinearity Error: 2.5 LSB Differential Nonlinearity Error: 0.6 LSB Input Referred Noise: 0.36 LSB plete: On-Chip Sample-and-Hold Amplifier and Voltage Reference Signal-to-Noise and Distortion Ratio: 78.0 d B Spurious-Free Dynamic Range: 88.0 d B Out-of-Range Indicator Straight Binary Output Data 44-Pin MQFP VINA VINB CML CAPT CAPB VREF SENSE plete 14-Bit, 1.25 MSPS Monolithic A/D Converter AD9241 FUNCTIONAL BLOCK DIAGRAM CLK SHA MDAC1 GAIN = 16 A/D MDAC2 GAIN = 8 A/D MDAC3 GAIN = 8 A/D AVDD DVDD DRVDD A/D 4 14 OUTPUT BUFFERS DIGITAL CORRECTION LOGIC OTR BIT 1 (MSB) MODE SELECT 1V REF AVSS DVSS DRVSS BIT 14 (LSB) PRODUCT DESCRIPTION PRODUCT HIGHLIGHTS The AD9241 is a 1.25 MSPS, single supply, 14-bit analog-todigital converter (ADC). It bines a low cost, high speed CMOS process and a novel architecture to achieve the resolution and speed of existing hybrid implementations at a fraction of the power consumption and cost. It is a plete, monolithic ADC with an on-chip, high performance, low noise sample-and-hold amplifier and programmable voltage reference. An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of the application. The device uses a multistage differential pipelined architecture with digital output error correction logic to guarantee no missing codes over the full operating temperature range. The input of the AD9241 is highly flexible, allowing for easy interfacing to imaging, munications, medical, and dataacquisition systems. A truly differential input structure allows for both single-ended and differential input interfaces of varying input spans. The sample-and-hold amplifier (SHA) is equally suited for both multiplexed systems that switch full-scale voltage levels in successive channels as well as sampling single-channel inputs at frequencies up to and beyond...